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50/50 haldex mod

Discussion in 'A3/S3 Forum (8L Chassis)' started by beachbuggy, Jun 26, 2013.

  1. beachbuggy
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    beachbuggy Well-Known Member

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    [Jun 26, 2013]
    #1
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  3. <tuffty/>
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    <tuffty/> Badger 5 Edition Staff Member Moderator

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    [Jun 26, 2013]
    No centre diff will be an issue... haldex is designed to 'slip' to counter this (unless in a straight line of course)

    All it essentially does is lock the valve in the position where the haldex clutch is fully engaged... not sure but suspect the various control modules may have something to complain about... lol

    Not something I would want to use on the road as a daily tbh

    <tuffty/>
    #2
  4. badger5
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    badger5 www.badger5.co.uk Site Sponsor

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    [Jun 26, 2013]
    straight lines only need apply
    #3
  5. [Dave B]
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    [Dave B] Daddy

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    [Jun 26, 2013]
    I had this mod for a while without the use of a bolt....the haldex earth strap had snapped :ninja:
    #4
  6. Paradox1
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    Paradox1 Active Member

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    [Jun 26, 2013]
    couldnt you just fit a 17mm bolt for less than £120+
    #5
  7. Scullies
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    Scullies Well-Known Member

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    [Jun 26, 2013]
    Depending on the length of the pin at the end of the bolt, this mod actually might work in conjunction with the haldex electronics.

    My understanding is that the new bolt is going to relocate the valve a little deeper inside the oil gallery. This would cause the oil gallery to be closed off completely when the stepper motor moves the valve, giving you 50/50. On the other hand, I don't think the haldex will completely disengage as the valve would be restricting the oil flow. So you could be using anything from a 99/1 split to a 51/49 split when cruising.

    [​IMG]

    [​IMG]

    haldex info 1.jpg

    haldex info 2.jpg

    If the bolt is very long and keeps the haldex 50/50 at all times, then you can say bye bye haldex :crying:
    #6
  8. jezzy
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    jezzy Member

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    [Jun 26, 2013]
    50/50 constant.
    think the clutch in the haldex would wear super fast and i bet they aint cheap to replace
    #7
  9. Andrew@A.L.D
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    Andrew@A.L.D May add NOS to 600+bhp?

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    [Jun 26, 2013]
    Give me a old Haldex controller and i'm 100% sure i could make a adjustable one rather than a bolt like that for the same price as the above one
    #8
    Pedrosousa likes this.
  10. Dani_B19
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    Dani_B19 Audi-sports own special child.

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    [Jun 26, 2013]
    Anybody got a spare one for andrew?
    #9
  11. Andrew@A.L.D
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    Andrew@A.L.D May add NOS to 600+bhp?

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    [Jun 26, 2013]
    I know i can do it

    I'm sure someone has a damaged haldex
    #10
  12. superkarl
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    superkarl MAN OF STEEL

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    [Jun 26, 2013]
    Ive got a spare you can use andrew.
    You can have it for experimentation
    #11
    Dani_B19 likes this.
  13. Andrew@A.L.D
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    Andrew@A.L.D May add NOS to 600+bhp?

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    [Jun 26, 2013]
    Empty your inbox superkarl so i can send you details
    #12
  14. Scullies
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    Scullies Well-Known Member

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    [Jun 26, 2013]
    What's your approach to this Andrew? Same bolt style as advertised but adjustable or control the haldex ecu with a controller inside the car?
    #13
  15. Andrew@A.L.D
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    Andrew@A.L.D May add NOS to 600+bhp?

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    [Jun 26, 2013]
    Thats it
    #14
  16. Westy
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    Westy Double Dark Side! Diesel & 8P

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    [Jun 26, 2013]
    Ooo interesting stuff.
    #15
  17. Scullies
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    Scullies Well-Known Member

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    [Jun 26, 2013]
    #16
  18. Dani_B19
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    Dani_B19 Audi-sports own special child.

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    [Jun 26, 2013]
    Ooh I like this. Andrew I thought your mate was developing one for you?
    #17
  19. Andrew@A.L.D
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    Andrew@A.L.D May add NOS to 600+bhp?

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    [Jun 26, 2013]
    He still is but his is like a piggy back ECU with a LED monitor showing the split
    #18
  20. Westy
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    Westy Double Dark Side! Diesel & 8P

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    [Jun 26, 2013]
    Would love one with an adjustable bias wheel on the dash.
    #19
  21. superkarl
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    superkarl MAN OF STEEL

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    [Jun 26, 2013]
    Inbox cleared.


    Are You saying it will be adjustable from stock to permanant 50/50? So when in stock mode it will do its own thing??

    Or a case of 100/0 to 50/50 fixed?
    #20
  22. Andrew@A.L.D
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    Andrew@A.L.D May add NOS to 600+bhp?

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    [Jun 26, 2013]
    #21
  23. superkarl
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    superkarl MAN OF STEEL

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    [Jun 26, 2013]
    :thumbsup: the SQS one is the one that gets most of my interest, so thats good!

    Sounds like your mate is trying to recreate what the monster performance s3 has, the bulgarian car, gtx42 etc...
    #22
  24. Andrew@A.L.D
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    Andrew@A.L.D May add NOS to 600+bhp?

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    [Jun 26, 2013]
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  25. Jason.s
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    Jason.s Active Member

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    [Jun 26, 2013]
    I've also got a spare from an R32 with only 40k on it that I was saving incase mine went pop.
    #24
  26. rhys1210
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    rhys1210 Member

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    [Jun 26, 2013]
    i just see that bolt damaging the standard controller.

    I brought the race controller (not the competition/blue)which is 50/50 all the time from the tt shop, this comes from haldex/borgwarner them selves, and i believe they uprate the piston in the controller as well as the software, for the higher pressure.

    just my 2p.
    #25
  27. TTazRS
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    TTazRS New Member

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    [Oct 10, 2013]
    Any updates on this? I am very interested.
    #26
  28. Andrew@A.L.D
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    Andrew@A.L.D May add NOS to 600+bhp?

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    [Oct 10, 2013]
    I'm just waiting for someone to give me a busted Haldex
    #27
  29. superkarl
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    superkarl MAN OF STEEL

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    [Oct 10, 2013]
    Ive simply not had the time to get under the rear of the car to take mine off to give to andrew. Will do it as part of a fluid change.
    Getting the engine sorted has just been more of a priority with the little time i have.
    #28
    Andrew@A.L.D and Westy like this.
  30. jojo
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    jojo Looking for Boost! Staff Member Moderator

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    [Oct 10, 2013]
    I wonder if Gops still has a broken one?
    #29
    Andrew@A.L.D likes this.
  31. s3gazz
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    s3gazz Well-Known Member

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    [Oct 10, 2013]
    S3dave might be able to help with this shore he had a spare nocking about
    #30
  32. Andrew@A.L.D
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    Andrew@A.L.D May add NOS to 600+bhp?

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    [Oct 10, 2013]
    Just pm dave
    #31
  33. s3gazz
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    s3gazz Well-Known Member

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    [Oct 10, 2013]
    Cool u think this will be a werth wile mod then
    #32
  34. Andrew@A.L.D
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    Andrew@A.L.D May add NOS to 600+bhp?

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    [Oct 10, 2013]
    Dave doesn't have one

    for sure it will be worth it, i think the haldex controller is worth it with high power s3
    #33
  35. Gops
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    Gops 6th gear @7000rpm

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    [Oct 10, 2013]
    I still have the broken one in my garage Andrew! Ill have to dig it out but I'm pretty sure it's there if you want it?
    #34
  36. Andrew@A.L.D
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    Andrew@A.L.D May add NOS to 600+bhp?

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    [Oct 10, 2013]
    Please Gops

    as as soon as you get it please pm me
    #35
    Gops likes this.
  37. jojo
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    jojo Looking for Boost! Staff Member Moderator

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    [Oct 11, 2013]
    You will be the fourth member on here to have owned this particular controller! lol
    #36
    s3dave and Westy like this.
  38. s3gazz
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    s3gazz Well-Known Member

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    [Oct 11, 2013]
    Ill have your blue haldex then Andrew lol
    #37
  39. Jason.s
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    Jason.s Active Member

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    [Oct 11, 2013]
    I still have a controller in the garage that's only had 30/40k put on it. Was only taken off due to controller upgrade and given to me for nothing.
    #38
  40. S3 Paul
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    S3 Paul Well-Known Member Regional Rep

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    [Oct 11, 2013]
    Ive got a TT one on a rear diff unit i bought...

    Jason i would say save the one you have pal.
    #39
  41. jojo
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    jojo Looking for Boost! Staff Member Moderator

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    [Oct 11, 2013]
    My Haldex controller just broke! :sob:
    #40

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